import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        double height = scanner.nextDouble();
        double weight = scanner.nextDouble();

        //write your code here......
        double state = weight/(height*height);
        int flag = (int)(state<18.5?1:state<20.9?2:state<24.9?3:4);
        if(1 == flag)
        {
            System.out.println("偏瘦");
        }
        else if(2 == flag)
        {
            System.out.println("苗条");
        }
        else if(3 == flag)
        {
            System.out.println("适中");
        }
        else
        {
            System.out.println("偏胖");
        }
        
    }
}